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C8051F041-GQ

Part # C8051F041-GQ
Description MCU 8BIT CISC 64KB FLASH 3V 64TQFP - Trays
Category IC
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SILICON LABORATORIES
Date Code: 0903
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

C8051F040/1/2/3/4/5/6/7
Rev. 1.5 109
SFR Definition 8.4. DAC1H: DAC1 High Byte
SFR Definition 8.5. DAC1L: DAC1 Low Byte
Bits7-0: DAC1 Data Word Most Significant Byte.
R/WR/WR/WR/WR/WR/WR/W R/WReset Value
00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
SFR Address:
SFR Page:
0xD3
1
Bits7-0: DAC1 Data Word Least Significant Byte.
R/W R/W R/W R/W R/W R/W R/W R/W Reset Value
00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
SFR Address:
SFR Page:
0xD2
1
C8051F040/1/2/3/4/5/6/7
110 Rev. 1.5
SFR Definition 8.6. DAC1CN: DAC1 Control
Bit7: DAC1EN: DAC1 Enable Bit.
0: DAC1 Disabled. DAC1 Output pin is disabled; DAC1 is in low-power shutdown mode.
1: DAC1 Enabled. DAC1 Output pin is active; DAC1 is operational.
Bits6-5: UNUSED. Read = 00b; Write = don’t care.
Bits4-3: DAC1MD1-0: DAC1 Mode Bits:
00: DAC output updates occur on a write to DAC1H.
01: DAC output updates occur on Timer 3 overflow.
10: DAC output updates occur on Timer 4 overflow.
11: DAC output updates occur on Timer 2 overflow.
Bits2-0: DAC1DF2: DAC1 Data Format Bits:
000: The most significant nibble of the DAC1 Data Word is in DAC1H[3:0], while the least
significant byte is in DAC1L.
001: The most significant 5-bits of the DAC1 Data Word is in DAC1H[4:0], while the least
significant 7-bits are in DAC1L[7:1].
010: The most significant 6-bits of the DAC1 Data Word is in DAC1H[5:0], while the least
significant 6-bits are in DAC1L[7:2].
011: The most significant 7-bits of the DAC1 Data Word is in DAC1H[6:0], while the least
significant 5-bits are in DAC1L[7:3].
1xx: The most significant 8-bits of the DAC1 Data Word is in DAC1H[7:0], while the least
significant 4-bits are in DAC1L[7:4].
R/W R/W R/W R/W R/W R/W R/W R/W Reset Value
DAC1EN - - DAC1MD1 DAC1MD0 DAC1DF2 DAC1DF1 DAC1DF0 00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
SFR
Address:
SFR Page:
0xD4
1
DAC1H DAC1L
MSB LSB
DAC1H DAC1L
MSB LSB
DAC1H DAC1L
MSB LSB
DAC1H DAC1L
MSB LSB
DAC1H DAC1L
MSB LSB
C8051F040/1/2/3/4/5/6/7
Rev. 1.5 111
.
Table 8.1. DAC Electrical Characteristics
V
DD
= 3.0 V, AV+ = 3.0 V, V
REF
= 2.40 V (REFBE = 0), No Output Load unless otherwise specified.
Parameter Conditions Min Typ Max Units
Static Performance
Resolution 12 bits
Integral Nonlinearity —±2— LSB
Differential Nonlinearity —±1LSB
Output Noise
No Output Filter
100 kHz Output Filter
10 kHz Output Filter
25
0
128
41
µVrms
Offset Error Data Word = 0x014 —±3±30 mV
Offset Tempco 6 ppm/°C
Full-Scale Error —±20±60 mV
Full-Scale Error Tempco 10 ppm/°C
V
DD
Power Supply Rejection
Ratio
—–60— dB
Output Impedance in Shutdown
Mod
e
DACnEN = 0
—100— k
Output Sink Current —300— µA
Output Short-Circuit Current Data Word = 0xFFF —15— mA
Dynamic Performance
Voltage Output Slew Rate Load = 40 pF —0.44— V/µs
Output Settling Time to 1/2 LSB
Load = 40 pF, Output swing from
co
de 0xFFF to 0x014
—10— µs
Output Voltage Swing
0—VREF
– LSB
V
Startup Time —10— µs
Analog Outputs
Load Regulation
I
L
= 0.01 mA to 0.3 mA at code
0xFFF
—60— ppm
Power Consumption (each DAC)
Power Supply Current (AV+
supplied to
DAC)
Data Word = 0x7FF
—110400 µA
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